Self-contained purifier and dust-collector



2 Sheets-Sheet 1.

(No Model.)

H. A. 810. A. BARNARD. SELF CONTAINED PURIFIER AND DUST COLLECTOR. No. 455,270.

Patented June 30, 189 1.

(No Model.) 2 Sheets-Sheet 2.

H. A. 8: 0. VA. BARNARD; SELF CONTAINED PURIFIBP. AND DUST COLLECTOR.

No. 455,270. Patented June 30, 1891.

wz'5zeaaea: fnvenZor:

UNITED STATES PATENT OFFICE.

HEMAN A. BARNARD AND CHARLES A. BARNARD, OF MOLINE, ILLINOIS, ASSIGNORS TO THE BARNARD dc LEAS MANUFACTURING COMPANY,

OF SAME PLACE.

SELF-CONTAINED PURIFI ER AND DUST-COLLECTOR.

SPECIFICATION forming part of Letters Patent No. 455,270, dated June 30, 1891.

Application filed March 4, 1891.

To all whom it may concern:

Be it known that we, HEMAN A. BARNARD and CHARLES A. BARNARD, of Moline, in the county of Rock Island and State of Illinois,

haveinveuted certainnewandusefullmprovements in Self-Contained Purifiers and Dust- Collectors; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon, Which form a part of this specification, in which Figure 1 is a side elevation of my improved combined grain separator, grader, and dustcollector. Fig. 2 is an end view thereof. Fig. 3 is a central longitudinal vertical sectional view through the same.

The present invention is an improvement in combined grain, separating, cleaning, and dust-collecting machines; and its object is to clean middlings, grain, or any suitable material by air blasts or currents, grading the material by the-currents into two or more portions, and separating the dust and other light impurities therefrom, and collecting the dust and discharging each grade of material and the dust at separate points, thus combining in one machine a purifier, grader, and dustcollector.

The machine shown in the accompanying drawings is especially designed for operating upon middlings in the manner stated; and it consists, essentially, of a pair of dust-collecting chambers communicating through a fancasing and through an upper collecting-chamber and a lower air-passage and a series of conveyers, and separating trunks or passages, and certain other novel details of construction and combinations of parts, as will be clearly understood from the following description and claims.

Referring to the accompanying drawings by letters, A designates the frame. or casing of the machine closed on all sides,but having suitable doors provided at various points for allowing access to its interior.

B designates a feed-hopper of ordinary construction, at one upper corner extending transversely of the casing and having a feedroller 1) in its mouth and a hinged flap or Serial No. 383,782. (No model.)

spectively. Air-passages c are left above the upper edges of boards C, which passages communicate with the air-passages d, between boards 0, respectively, and passages h are left between the lower ends of boards C c, as shown.

(I designate valves at the upper ends of boards 0, which can be adjusted by fingers d on the outside of the casing, as indicated in Fig. 1, thus regulating the draft through passages d, or in place of valves d a single valve or valves might be placed in the passage connecting the fan-chamber with chamber F, or any suitable arrangement of valves might be used as is obvious, the effect of which'will be to regulate or vary the draft or current of air through the passages between chambers F and D.

d designates a transverse horizontal partition in the upper part of the casing extend ing from near the ,upper end of the inner board 0 to a conveyer-trough j, lying transversely of the casing at the upper corner thereof opposite hopper B, and in this trough is a conveyer J. The space above partition cl forms a depositing-chamber D, wherein the second grade of material is deposited, any deposits being swept off into trough j by means of an endless belt L, carrying brushesl Z, and operated by pulleys on shafts L, journaled in the sides of the casing. A passage is left between trough j and end wall of the casing for the descent of air-currents into the space below partition d, which constitutes a large dust-collecting chamber E.

Just beneath partition 01 and adjoining the inner board 0', is a fan casing or chamber G, in which is a fan G, mounted on shaft g,

j, so that the current of air passing from chamher D is deflected downward under partition 0 before it can rise into the fan-chamber.

Below the fan-chamber is a transverse partition P, which extends nearly to the bottom of easing A and connects with a false bottom P, which extends forward under trough H to near the end wall of the casing, and P is an inclined transverse board attached to the casing and extending nearly to bottom P, having a narrow passage f between the same. The space thus separated from chamber E and below boards 0 and hopper constitute a second dust-collecting chamber F. A board 19 is set between the inner edge of trough H and inner board 0, forming an air-passage F, through which air is driven from the fanchamber into chamber F. Any dust or matters collecting on the bottom of chamber F are swept out through passage f by means of an endless belt N, carrying brushes 21 and running over pulleys on shaft N, journaled in the sides of the casing.

K designates a transverse trough in chamber E at the lower right-hand corner of the machine, and K is a conveyer therein. The bottom of chamber E (and easing) inclines from the upper inner edge of trough K down to the other end of easing A, below chamber F, as shown, and any deposits on this bottom are swept into trough K by endless belts M,

carrying brushes m and running over pulleys on shafts h journaled in the sides of the casing. The conveyers H J K are preferably driven by sprocket-pulleys and belt v from shaft S, (see Figs. 1 and 2,) which is driven by belt U and pulleys from the fan-shaft g, to which power is applied. The conveyers L, M, and N are driven by sprocket-pulleys and belt V from shaft S. 0" r are tightener-pulleys for said belts.

Operation: The middlings enter hopper B and are fed in aunit'orm stream of even thickness across the entire width of the machine by roller Z) and are aspirated by the air-currents that pass through passages 0 cl, and the cleaned middlings of heaviest grade fall into conveyer-trough H through passage h and are discharged from the machine by conveyer H. The air-currents (indicated by the arrows) are produced by the fan G, which causes the air in the machine to circulate through chamber F, then through openings 0 passages (1, into and through settlingchamber D,then into and through dust-chamber E, and finally back into fan-chamber G, thus forming a continuous current. The

small openingf at the bottom of chamber F, extending. across the width of the machine, allows part of the air-current to pass through it into chamber E beneath chamber F and thence back into the fan, thus forming in the machine two continuous air currents, as

shown by arrows, Fig. 3, which serve a double purpose-viz., to draw the dust and light particles that are deposited in dust-chamber F through into chamber E, where the endless carrier M will sweep it to conveyer K, and, second,bydividing and meeting the currents form eddies in the dust-settling chambers E F, which assist in depositing the dust in said chambers. The air-currents passing through openings 0 and (1 can be regulated by valves (1 thus governing the cleaning and grading of the middlings. The lighter middlings, dust, and other impurities which are taken up by the air-current pass through chamber D, wherein separation takes place. The middlings settling therein are delivered by carriers L into troughj, and conveyer J discharges them from the machine. The dust and other lighter impurities pass down into chamber E and are deposited on the bottom thereof and conveyed by carrier M into trough K and discharged by conveyer K out of the machine. The conveyers II J K have an opening at their discharge ends provided with a suitable valve, through which material can be discharged without admitting air. The machine is cased, and no air admitted or discharged except such as is unavoidable in the admission of material and discharge of same. Partition 0 in chamber E deflects the dust-laden air downward, thus assisting in settling the dust in said chamber. It will be observed that this machine contains a fan, a separatin device, a settling-chamber for middlings, and two dustseparating chambers, an opening through the fan chamber connecting the dustchambers, and there are two return air-passages connecting these dust-collecting chambers, thus producing two continuous endless air-currents in both dust-chambers, and the dust taken up by the air passing through the separating device has to travel through both dust-chambers and the air is thus thoroughly deprived of dust before re-entering the separating-passages also, that the two continuous air-currents meeting and dividing cause eddies to be formed in the dust-chambers,wl1ich assist in depositing dust therein. The separating device can have as many or as few air-passages for purifying and grading the middlings as may be desired. The form of chamber F is such that the air in passing through it travels in almost a semicircular direction, and the dust is naturally impelled thereby to the outside edge of the current, and the opening in the bottom of chamber F allows that part of the aircurrent containing the most impurities to pass through and be again returned to dust-chamber J, and thus made to pass through both chambers again. This forms a cut-oil, and assists in making the.current of air passing through the separating devices cleaner than it otherwise would be. \Vhen the machine is wide, two fans maybe mounted on the same shaft.

Having thus described our invention, what we claim as new is- 1. In a combined middlings-purifier, grader, and dust-collector, the combination of a separating device having a series of air-passages across which the material must pass, means for discharging the purified material collecting in it, a'settling-chamber for collecting the lighter middlings drawn out in the process of purifying, and two dust-settling chambers,'

drawn up by the air-current with a second-v ary air-passage connecting the two dust-chambers, and means for creating a circulation of air in said passages, whereby a part of the dust-laden air can be returned to the first dust-chamber and made to pass through both chambers again, substantially as set forth.

3. The combination, in a combined separator and dust-collecting machine, of a dustcollecting chamber, a depositing-chamber above the same, air-blast passages through which the material to be cleaned is passed interposed between and connecting the said chambers, a second dust-collecting chamber below the depositchamber communicating with the first-mentioned dust-chamber, and a fan-chamber and fan between and communicating with both dust chambers, substantially as set forth.

4. The combination of the hopper, the inclined boards below the same forming airpassages through which the material delivered from the hopper must pass, and a receiving-trough for the material falling from said boards, a depositchamber above said boards, two dust-collecting chambers below the deposit-chamber and hopper, respectively, and a fan-chamber communicating with said dust-chambers, and a fan whereby continuous air-currents are created through said chambers and air-passages, substantially as described.

5. The combination of the hopper, inclined boards below the same on which the material delivered from the hopper falls, and a receiving-trough for the falling material, a depositchamber above said boards, two dust-collecting chambers below said deposit-chamber and hopper, respectively, a fan-chamber communicating with said dust-chambers, and a fan whereby a continuous air-current is created through the said chambers and between said boards, with conveyers for removing the ma-' terial from said receiving-trough, depositchamber, and dust-chambers, substantially as specified.

6. The combination, ina combined purifier, separator, and dust-collector, of two dust-collectin g chambers, a fan-chamber communicating with said chambers, a series of air-blast passages above one dust-chamber through which the material is passed to be cleaned, a deposit-chamberv above said passages communicating with the other chamber, and a fan for creating a continuous current through said chambers and passages, substantially as described, with an air-passage leading from one dust-chamber to the other, whereby a second air-current is created in the larger dust-chamber below the fan, substantially as described.

7. The combination of the air-blast separating device, the dust-collecting chamber below the same, and a fan-chamber opening into said dust-chainberbelow the air-passages,with a second dust-collecting chamber indirectly communicating with the top of the first dustchamber through said separating device and again communicating with said first dustchamber through an opening in the bottom thereof, and also communicating with the fanchamber, whereby a continuous current of air may be created through the fan chamber, separating device, and dust-chamber, and a secondary continuous air-current be simul-' taneously created through the fan-chamber and dust-chamber only, substantially as and for the purpose set forth.

8. The combination of the main casing, the hopper therein, the inclined boards below the same, the dust-chamber F, and the collectingchamber D, communicating through the passages between the boards, with the fan-chamber below chamber D, communicating with chamber F, the dust-collecting chamber E, communicating-with chamberDand with the fan-chamber, substantially as specified.

9. The combination of the main casing, the hopper therein, the inclined boards below the same, the dust-chamberF and the collectingchamber D, communicating through the passages between the boards, and the fan-chamber below chamber D, communicating with chamber F, the dust-collecting chamber E, communicating with chamber D and with the fan-chamber and the convcyers in said cham bers, and the brushes in chambers D E, substantially as specified.

10. Thecombination of the main casing, the hopper therein, the inclined boards below the same, the dust-chamber F and the collectingchamberD, andthe fan-chamber below cham- IIO ber D, communicating with chamber F, the

dust-collecting chamber E below the fanchamber and communicating therewith and extending beneath chamber F and communicating therewith through the bottom thereof, substantially as described.

11. The combination of the main casing, the hopper therein, the inclined boards below the same, the dust-chamber F, collecting-chamber D, fan-chamber G, and dust-collecting chamber E below the fan-chamber and communicating therewith and extending beneath chamber F and having a direct communication with chamber F through its bottom, the

brushes in chambers D, F, and E, and the conveyers II .I K, all substantially as deand a conveyer for removing the material collected by the scrapers, in combination with scribed.

12. In a combined purifier, grader, and-dust-i catcher, the dust-chamber F, aspirating-pas-E sages c and d, and settling-chamber Dabove? chamber F, and dust-settling chamber E below chamber D, in combination with the fanchamber G, through which chambers F and E communicate, and fan G, substantially as and for the purpose specified.

13. The combination of the'fan-chamber G,

dust-chamber I aspirating-passages c and? d, and settling-chamber D above chamber G, dust-settling chamber E below chamber D,I communicating with the fan-cl1amberG,'forming an endless air-passage, and valves d for; controlling the air-currents, substantially as;

5 for removing collected material from said specified.

14. The combination of the hopper B, aspi-l rating-passages c and d, valves d settlingchamber D, dust-chamber E, fan-chamberG; dust-chamber F, and conveyers K J H, whereby the material admitted through hopper B will be purified, graded, and dusted and each grade discharged separately, all constructed substantially vertical walls, and large flatand arranged substantially as specified.

15. The combination of the hopper B, aspirating-passages c and (1', valves d settling-t chamber D, carrier L, dust-chamber E, carrier M, fan-chamber G, dust-chamber F, can ricr N and conveyers K J H, and fan G, all,

substantially as specified.

16. In a combined purifier, separator, and

dust'collecting machine, the combination of a hopper, the inclined boards 0 0 below the hopper, and the trough H and conveyor H, the dust-collecting chamber F below said boards and trough, the brushes 'n in chamber F, the deposit-chamber D at top of the machine communicating with chamber F, the conveyer-trough and conveyer J, and brushes Z, the dust-collecting chamber E below chamber D,communicating therewith and extending under chamber F and communicating therewith through its bottom, and the trough and conveyer K and brushes m in said chamber, with the fan and fan-chamber communicating with chambers F and E and adapted to create continuous air-currents through the machine, and the deflecting-partition O in chamber E, substantially as specified.

17. In an endless air-current separatingmachine having a continuous air-passage, a separating device, a fan-chambcr and one or more settling-chambers, each chamber being fiat bottomed and provided with both a scraper for continuously cleaning the bottom substantially as and for the purpose set forth.

18. In a separator and dusbcollector, the combination of an air-blast separating device, a fiat-bottomed settling-chamber below the same, a second fiat-bottomed settlin g-chamber indirectly communicating with the first chamber through the said air-blast device and through a fan-chamber, with the conveyers chambers, and traveling scrapers or brushes for sweeping thecollected matters otf the bottoms of said settling-chambers to the conveyers, substantially as described.

19. In an endless closed air-current dustcollecting machine, the combination of a fanchamber, a fan, and a dust-chamber having surfaced bottom, with traveling scrapers or brushes adapted to sweep the collected material 01f the bottom of the dust-chamber, and mechanism, substantially as described, for laterally moving said scrapers or brushes over the bottoms of the dust-chambers, substantially as set forth.

20. In a combined separator and dust-collector having an endless air-current, the combination of a settling-chamber, an air-blast separating device,a second settling-chamber communicating with the first through said separating device, both said chambers having flat bottoms, with a fan-chamber establishing communication between the settling-chambers below the separating device, traveling scrapers or brushes for scraping collected matter off the bottoms of said chambers, and means for operating said scrapers, all substantially as specified.

In testimony that We claim the foregoing as our own we aifix our signatures in presence of two witnesses.

IIEMAN A. BARNARD. CHARLES A. BARNARD.

Witnesses:

LUTE II. PIKE, T. M. VAN HORN. 

